Xian dai jiao huan yuan li

Ben shu jie shao le ge lei jiao huan xi tong de ji ben gai nian he gong zuo yuan li.Zhu yao nei rong bao kuo:jiao huan de ding yi,Ge lei jiao huan ji shu de te dian ji qi fa zhan guo cheng,Jiao huan wang luo she ji de ji chu li lun he shi xian fang fa,Cheng kong dian lu jiao huan xi tong de gong zuo yuan li he ge zhong jie kou dian lu de zuo yong deng.